How to Fix LG Microwave Error F11

Error Code: F11 Difficulty: Hard

Problem: In convection cooking mode, the temperature is above 100°C even after the maximum time of 30 minutes.

How to Fix F11 Error (Step-by-Step)

1. Completely disconnect the microwave from the electrical outlet for safety.
2. Remove the outer wrapper of the microwave by taking out the screws on the back and sides.
3. It is critical to locate and discharge the high-voltage capacitor to avoid electrical shock. Use a well-insulated screwdriver to short across its terminals.
4. Locate the inverter board, which is a separate circuit board that powers the magnetron.
5. Take a picture of the wire connections before carefully unplugging all connectors from the inverter board.
6. Remove the screws holding the inverter board in place and swap it with the new one.
7. Reconnect all wires, reassemble the microwave’s cabinet, and test the convection cooking function.
8. Turn the appliance off, wait about 2 minutes, then turn it back on.

Next Steps and Parts

Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.